Calendar 'hide' arrow should remember state across reloads

The 'hide' arrow on the calendar (used to collapse/expand property names) does not remember its previous position (open or closed) between page reloads. This requires users to manually re-hide property names every time the calendar is reloaded, which is particularly disruptive on mobile devices where the expanded names occupy a significant portion of the screen. This should function like the main side menu, which successfully remembers its state.

We would greatly appreciate it if this could be implemented, as this hopefully simple change would significantly reduce friction for users who open the calendar multiple times a day.